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What is the + sign with 40 ? The ball size with celluloid ball before the 2014 change was slightly less than 40 mm in diameter & is actually 39.6 mm So it is sometimes referred to as the 40- ball The plastic ball after 2014 is lightly larger than 40mm in diameter & is actually 40.4 mm So th...

on Saturday 09/16/2023 at 9:22 AM 4. Last question is about the normal rubber for BH. Better chinese (cheaper) or european? Better tacky or non-tacky? Better medium- soft or medium-hard? I own Joola Ryzhen Ice, Butterfly Tackiness D, Palio CJ8000 Biotech 42°-44°, Palio AK47 blue and Palio AK47 yell...

From what I understand the important fact is that a rule change requires 75% of votes by the 226 or so National affiliates of ITTF
A regulation change requires only a simple majority or 51% of the votes of ITTF exectutive council

12 inches or 300 mm

Multiple lengths